The 'VFD' output is a 0-10V signal to control the spindle speed on a variable speed spindle. Unless you add a variable speed spindle motor/drive at some point it is not important.
For the current limiting resistors you use 1K per amp of rated coil current. So if you have a 2.8A motor you would want a 2.8K resistor. The closest you will find is 2.7K, which will work fine. Don't go nuts trying to get it exact. Use a regular 1/4" carbon resistor.
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Jeff Birt |